It's lip dubbing - you know the combination of lip syncing and audio dubbing to make a music video - British style.

More specifically it's the crew of HMS Ocean who put together a video to celebrate their anticipated return to the UK on December 9 - just in time for Christmas.

The men and women aboard the ship were only due to be away for seven weeks when they went on a deployment exercise with other nations but that turned into seven months away from loved ones as they "were diverted to Libya and further operations."

Anyway here they all are in a lip-dubbed video of US singer Mariah Carey's version of "All I want for Christmas is you"; four minutes of fun and feel-good sing-a-long.

It has apparently already been featured on US breakfast time TV and a thrilled Carey tweeted the video and thanked the Royal Navy

And Carey's reaction? Well she's thrilled and said as much in a Tweet she sent to the Royal Navy.

"This is the best thing I've ever seen," she wrote. "You guys just made my day! Happy Happy Christmas!!! x0x0 to the troops."

Now here's a challenge. Can any of you - even the most curmudgeonly - not to at least raise a smile at some point during this video.

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